They are producing more Model 3 then there is demand for them and at the same time they are stating they are producing less units. If you search new Model 3's available for immediate purchase there are tons of them available. There is no longer a backlog on orders.
Is this a description of the state of affairs as you understand them to be, in all markets, or is this for a subset of markets (presumably US and Canada)? Are you claiming that the Europe and Asia, as well as RHD market, order backlog was sated in 2018 + Q1, and that there are excess Model 3's accumulating for sale in Norway for instance, and elsewhere in Europe? "tons" of them?
My understanding is that below the top two trims, Model 3 isn't even available in Europe or China yet (Q2). And that in these markets, there are functionally 0 inventory units available for immediate delivery.
And that there is a reasonably long list of markets where Model 3 isn't available in the top two trims (right hand drive being, I believe, the primary theme of this second list).
I think we're starting to get into the range of understanding US market demand for Model 3, where the evidence is that the full lineup is at least order able in the US, and most of the range of cars is also something you can expect to take delivery of in a reasonably short time frame. What I would describe and what I think of as a market healthy / company healthy wait between order and delivery (because broadly speaking, Tesla is better off when customers wait 2-4 weeks from order to delivery of the car that they want, than when they wait 2-4 months or more, and Tesla's long term business is better off when the customer wait from order to delivery is shorter than longer).
Until Tesla is delivering in something closer to all of the markets in the world, on something like the market equivalent of the 2-4 week order to delivery timeline of the US (I add 3 weeks for boat-on-ship for Europe and China deliveries, so 5-7 weeks for those orders), for the full range of the Model 3 timeline, then it looks to me like demand continues to outstrip the supply by a significant margin.
There is a reasonable different question arising from Q1 production about Tesla and Tesla's suppliers ability to produce Model 3's in something like the unit volume needed to sate that demand. I'm reasonably confident that if Tesla focuses on the top 2 trims of Model 3, then we will see worldwide demand for the top 2 trims of Model 3 become sated sometime this year (given that RHD variant comes to market, and becomes available in the big RHD markets).
So I think, without much evidence, that the worldwide demand for the top 2 trims (AWD, AWD Performance) of Model 3 are something less than 6 or 7k units / week; and possibly a lot less. Beyond that, there's too much pent up demand from year's of people waiting to know what the sustained Europe and China demand will be, once that pent up demand is sated. Or at least, that's the best I can say today about the long term demand, with what I know right now.